JPS54131525A - Production of high-ductile, low-yield ratio type, high- tensile, heat rolled steel plate - Google Patents

Production of high-ductile, low-yield ratio type, high- tensile, heat rolled steel plate

Info

Publication number
JPS54131525A
JPS54131525A JP3916378A JP3916378A JPS54131525A JP S54131525 A JPS54131525 A JP S54131525A JP 3916378 A JP3916378 A JP 3916378A JP 3916378 A JP3916378 A JP 3916378A JP S54131525 A JPS54131525 A JP S54131525A
Authority
JP
Japan
Prior art keywords
yield ratio
tensile
low
steel plate
ductile
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP3916378A
Other languages
Japanese (ja)
Other versions
JPS5827329B2 (en
Inventor
Kunishige Kaneko
Mamoru Tashiro
Nagayasu Takemoto
Itaru Imabayashi
Takashi Furukawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP53039163A priority Critical patent/JPS5827329B2/en
Priority to US06/022,500 priority patent/US4316753A/en
Publication of JPS54131525A publication Critical patent/JPS54131525A/en
Publication of JPS5827329B2 publication Critical patent/JPS5827329B2/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/001—Austenite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/002—Bainite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite

Abstract

PURPOSE: A low alloy steel containing Mn, Cr, and Si as basic components is heat rolled at a specified temperature and wound below 500°C, so that a high-ductile, low-yield ratio type, high-tensile steel plate is produced.
CONSTITUTION: A steel material containing as necessities C<0.20%, Mn: 0.5 to 2.5%, Cr: 0.05 to 1.0%, and as required Si: less than 1% is heat rolled at a temperature of Ar3+60°C to produce steel plate. The plate is wound into coil below 500°C to provide plate having a tensile strength of more than 40 kg/mm2 and yield ratio less than 70%. To further reduce yield ratio, the steel material of the above composition is heat rolled at a temperature of two ferrite and austenite phase coexistent zone, and then wound below 500°C. The reduction in this case is less than 40% so as to control the residual process strain.
COPYRIGHT: (C)1979,JPO&Japio
JP53039163A 1978-04-05 1978-04-05 Manufacturing method of low yield ratio high tensile strength hot rolled steel sheet with excellent ductility Expired JPS5827329B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP53039163A JPS5827329B2 (en) 1978-04-05 1978-04-05 Manufacturing method of low yield ratio high tensile strength hot rolled steel sheet with excellent ductility
US06/022,500 US4316753A (en) 1978-04-05 1979-03-21 Method for producing low alloy hot rolled steel strip or sheet having high tensile strength, low yield ratio and excellent total elongation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53039163A JPS5827329B2 (en) 1978-04-05 1978-04-05 Manufacturing method of low yield ratio high tensile strength hot rolled steel sheet with excellent ductility

Publications (2)

Publication Number Publication Date
JPS54131525A true JPS54131525A (en) 1979-10-12
JPS5827329B2 JPS5827329B2 (en) 1983-06-08

Family

ID=12545448

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53039163A Expired JPS5827329B2 (en) 1978-04-05 1978-04-05 Manufacturing method of low yield ratio high tensile strength hot rolled steel sheet with excellent ductility

Country Status (2)

Country Link
US (1) US4316753A (en)
JP (1) JPS5827329B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2949124A1 (en) * 1979-12-06 1981-06-11 Stahlwerke Peine-Salzgitter Ag, 3150 Peine Hot rolled plate or strip made of de-nitrided steel - where controlled cooling after rolling produces high toughness in notched Charpy impact tests at sub-zero temps.
JPS56136929A (en) * 1980-03-26 1981-10-26 Sumitomo Metal Ind Ltd Production of composite structure type high tensile hot rolled steel plate having high ductility and low yield ratio
US4388122A (en) * 1980-08-11 1983-06-14 Kabushiki Kaisha Kobe Seiko Sho Method of making high strength hot rolled steel sheet having excellent flash butt weldability, fatigue characteristic and formability

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5677329A (en) * 1979-11-27 1981-06-25 Nippon Steel Corp Production of composite structure high tensile cold-rolled steel plate of superior workability
JPS5767130A (en) * 1980-10-14 1982-04-23 Kawasaki Steel Corp Production of hot rolled dual phase high tensile steel plate
US4501626A (en) * 1980-10-17 1985-02-26 Kabushiki Kaisha Kobe Seiko Sho High strength steel plate and method for manufacturing same
JPS601929B2 (en) * 1980-10-30 1985-01-18 新日本製鐵株式会社 Manufacturing method of strong steel
JPS57137452A (en) * 1981-02-20 1982-08-25 Kawasaki Steel Corp Hot rolled high tensile steel plate having composite structure and its manufacture
JPS57137426A (en) * 1981-02-20 1982-08-25 Kawasaki Steel Corp Production of low yield ratio, high tensile hot rolled steel plate by mixed structure
JPS58136716A (en) 1982-01-28 1983-08-13 Nippon Steel Corp Manufacture of high strength hot rolled steel plate for working having low yield ratio and composite structure
DE3440752A1 (en) * 1984-11-08 1986-05-22 Thyssen Stahl AG, 4100 Duisburg METHOD FOR PRODUCING HOT TAPE WITH A TWO-PHASE TEXTURE
EP0750049A1 (en) * 1995-06-16 1996-12-27 Thyssen Stahl Aktiengesellschaft Ferritic steel and its manufacture and use
EP0748874A1 (en) * 1995-06-16 1996-12-18 Thyssen Stahl Aktiengesellschaft Multiphase steel, manufacturing of rolled products, and its use
NL1007739C2 (en) * 1997-12-08 1999-06-09 Hoogovens Staal Bv Method and device for manufacturing a high strength steel strip.
NL1007731C2 (en) 1997-12-08 1999-06-09 Hoogovens Staal Bv Method and device for manufacturing a ferritically rolled steel strip.
US6364968B1 (en) * 2000-06-02 2002-04-02 Kawasaki Steel Corporation High-strength hot-rolled steel sheet having excellent stretch flangeability, and method of producing the same
CN103572164B (en) * 2012-07-31 2015-10-21 攀钢集团攀枝花钢钒有限公司 A kind of hot rolling acid-cleaning plate and production method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49107914A (en) * 1973-02-20 1974-10-14

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5178730A (en) * 1974-12-30 1976-07-08 Nippon Steel Corp Fueraitosoto kyureihentaisoyorinaru fukugososhikikohanno seizohoho

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49107914A (en) * 1973-02-20 1974-10-14

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2949124A1 (en) * 1979-12-06 1981-06-11 Stahlwerke Peine-Salzgitter Ag, 3150 Peine Hot rolled plate or strip made of de-nitrided steel - where controlled cooling after rolling produces high toughness in notched Charpy impact tests at sub-zero temps.
JPS56136929A (en) * 1980-03-26 1981-10-26 Sumitomo Metal Ind Ltd Production of composite structure type high tensile hot rolled steel plate having high ductility and low yield ratio
JPS5914092B2 (en) * 1980-03-26 1984-04-03 住友金属工業株式会社 Manufacturing method of composite structure type high tensile strength hot rolled steel sheet with high ductility and low yield ratio
US4388122A (en) * 1980-08-11 1983-06-14 Kabushiki Kaisha Kobe Seiko Sho Method of making high strength hot rolled steel sheet having excellent flash butt weldability, fatigue characteristic and formability

Also Published As

Publication number Publication date
JPS5827329B2 (en) 1983-06-08
US4316753A (en) 1982-02-23

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